信息素

The diapause hormone -pheromone biosynthesis activating neuropeptide gene encodes five neuropeptides, DH, PBAN,α-SGNP,β-SGNP, and γ-SGNP (suboesophageal ganglion neuropeptide), all of which share the C-terminal pentapeptide FXPRLamide sequence and the pentapeptide fragment has been shown to be the active core required for their activity.

以鳞翅目的昆虫为研究对象，对滞育激素(diapause hormone，DH)-信息素生物合成激活肽(pheromone biosynthesis activating neuropeptide，PBAN)基因的表达定位、表达变化及其功能进行了研究。

Secondly,how to utilize the grid pheromone system model to realize the algorithm based on ACS is explicated. This refers to the construction of TRAG by the random selection of appropriate resources for each task by the user agent and the optimization of TRAG through the positive feedback and distributed parallel computing mechanism of the ACS.

其次说明了基于蚁群系统如何利用网格信息素系统模型实现该算法，涉及任务资源分配图的构造，以及通过蚁群的正反馈和分布式并行计算机制优化任务资源分配图。

When we conducted a chemical assay of the uropygial preen gland secretions, we found 4 times more volatile octadecanol, nonadecanol, and eicosanol in ratios in males than in females, making them putative male pheromone candidates.

在这篇文章中，研究人员选取全世界最为广泛的笼养鸟和模式实验鸟－虎皮鹦鹉作为实验对象，利用传统的双向选择和GC-MS分析方法，证明鸟类确实存在&性信息素的通讯&。

When we conducted a chemical assay of the uropygial preen gland secretions, we found 4 times more volatile octadecanol, nonadecanol, and eicosanol in ratios in males than in females, making them putative male pheromone candidates.

在这篇文章中，研究人员选取全世界最为普遍的笼养鸟和模式实验鸟－虎皮鹦鹉作为实验对象，利用传统的双向选择和GC-MS分析方法，证明鸟类确实存在&性信息素的通讯&。

When we conducted a chemical assay of the uropygial preen gland secretions, we found 4 times more volatile octadecanol, nonadecanol, and eicosanol in ratios in males than in females, making them putative male pheromone candidates.

在这篇文章中，研究人员选取全世界最为普遍的笼养鸟和模式实验鸟－虎皮鹦鹉作为实验对于象，利用传统的双向选择和GD-MS分析方法，证明鸟类确实存在&性信息素的通信&。

R-4-Methyl-δ-valerolactone was transformed into-methyl 5-bromo-4-methylpentanoate (5) which is a stable and easily reserved reagent.

首次利用甾体皂甙元氧化降解废弃物-4-甲基－δ-戊内酯合成了松叶蜂性信息素(25，3S，7S)-3，7-二甲基－2-十五醇乙酸酯(2)和丙酸酯(3)。

The vomeronasal organ detects the pheromones that govern reproductive and social behaviors.

发现了信息素的器官犁鼻管生育和社会风气。

Mammals ; Main olfactory system ; Vomeronasal system ; Pheromones ; Coding ; Receptor

哺乳动物；主要嗅觉系统；犁鼻系统；信息素；编码；受体

They also have aggregation pheromones associated with their droppings, which have the effect of increasing the level of aggregation or clumping of individuals in the population.

他们还含有聚集信息素，这主要是跟可以增加个体在群体里集合能力的唾液有关。

Pheromones of conspecific male inse cts are usually belonged to the same type chemical, while the chemical structure s are different. However, male insects can utilize the little difference to attr act female insects, urge the copulating and prevent interspecific mating, etc.

通过不同部位释放的雄性昆虫性信息素种类是多样的，但其化学结构的差异又是细微的，雄性昆虫则利用这些差异来引诱雌性昆虫、促进交配和生殖隔离等。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。